30 May
2007
30 May
'07
3:02 p.m.
Chris M wrote:
They use solvents or whatever typically I guess, but
the addition of a lot of heat might do it too. You can
build a small gas furnace for probably much less then
$100 USD. Theoretically the temperature will be
limited only by the quality of the refractory cement
used. Oi whatever.
Charcoal is the low cost fuel ... But then I don't
think one would get that much gold to need a furnace.
The books are here. http://www.lindsaybks.com/
*The Ferrotype and How to Make It* looks like a nice
1891 re-print.
Let see if you can even find your digital camera 100+ years from now.